Cyperus filiculmis

Vahl

Enum. Pl. 2: 328. 1805.

IllustratedEndemic
Synonyms: Cyperus martindalei Brittton
Treatment appears in FNA Volume 23. Treatment on page 175. Mentioned on page 144, 147, 176.

Herbs, perennial, cespitose, bases cormose; rhizomes knotted, beaded. Culms trigonous, 15–48 cm × 0.4–1 mm, glabrous. Leaves flat, 10–30 cm × 0.5–2 mm. Inflorescences: spikes rather densely ovoid, 1–3.5 cm; rays 0 (sometimes 1–4), 1–6 cm; rachis 1–4 mm; bracts 3–4, horizontal to slightly reflexed, flat, 6–25 cm; rachilla ± deciduous, wingless. Spikelets 25–60, compressed, oblong-lanceoloid, 5–12 × 2.2–3.5 mm; floral scales deciduous, 5–15, yellowish to yellowish-brown, laterally 4–5-ribbed, oblongovate, 2.6–3.6 × 1.4–2 mm, margins loosely spreading or clasping achene. Flowers: anthers 0.8–1 mm; styles 1 mm; stigmas 1.5–2.5 mm. Achenes dark grayish brown, sessile, narrowly oblong, 1.8–2.2 × 0.5–0.8 mm, apex obtuse, apiculate, surfaces puncticulate.


Phenology: Fruiting summer.
Habitat: Well-drained, open roadsides, fields, pine barrens, dunes
Elevation: 0–200 m

Distribution

V23 294-distribution-map.jpg

Ala., Fla., Ga., La., Md., Miss., N.C., S.C., Tex., Va.

Discussion

Cyperus filiculmis has long been treated within a broader and more widely used concept of C. filiculmis (C. lupulinus); see B. G. Marcks (1974)

Selected References

None.

Lower Taxa

None.
... more about "Cyperus filiculmis"
brown +  and dark grayish +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
0.5mm;0.8mm +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
shortened +
persistent +  and deciduous +
decurrent +
w--shaped +  and keeled +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
horizontal +  and slightly reflexed +
parallel +  and divergent +
terete +, rolled +  and plicate +
15 cm150 mm <br />0.15 m <br /> (48 cm480 mm <br />0.48 m <br />) +
scabridulous +
trigonous +
0.4mm;1mm +
Ala. +, Fla. +, Ga. +, La. +, Md. +, Miss. +, N.C. +, S.C. +, Tex. +  and Va. +
0–200 m +
yellowish +  and yellowish-brown +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
hypogynous +  and subtending +
biconvex +  and trigonous +
Well-drained, open roadsides, fields, pine barrens, dunes +
subumbellate +  and capitate +
spreading +  and erect +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
10cm +  and 30cm +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
Fruiting summer. +
2-3(-4)-carpellate +
antrorse +  and extrorse +
3 (?) +  and 1 (?) +
conspicuous +
unequal +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
beaded +  and knotted +
adventitious +
basal +  and proximal +
cylindric;compressed +
cylindric +
Illustrated +  and Endemic +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
25 +  and 60 +
oblong-lanceoloid;compressed +
2.2mm;3.5mm +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
2-3-fid +
1 cm10 mm <br />0.01 m <br /> (?) +
Cyperus martindalei +
Cyperus filiculmis +
Cyperus subg. Cyperus +
species +
tuberous +, stoloniferous +  and rhizomatous +
herb +  and cespitose +